Event: Div3

Opponent Rating Result
Edward T Bromilow 0 0 - 1
Marcel V Taylor 144 0 - 1
John E Fryer 125 ½ - ½
Philip Sheldon 127 0 - 1
Nigel D Marshall 114 0 - 1
David JF Woodhouse 119 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

-162 = (629 + 400 * (0 - 4)) / 6)

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